package com.example.test03

import android.os.Bundle
import android.os.Handler
import android.widget.Button
import android.widget.TextView
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.ViewCompat
import androidx.core.view.WindowInsetsCompat

class ForthActivity : AppCompatActivity() {

    var seconds = 0
    var running = false
    var wasRunning = false

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_forth)
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
            insets
        }

        savedInstanceState?.apply {
            seconds = getInt("seconds")
            running = getBoolean("running")
            wasRunning = getBoolean("wasRunning")
        }

        runTimer()
        findViewById<Button>(R.id.button_start).setOnClickListener {
            running = true
        }
        findViewById<Button>(R.id.button_stop).setOnClickListener {
            running = false
        }
        findViewById<Button>(R.id.button_restart).setOnClickListener {
            running = true
            seconds = 0
        }
    }

    fun runTimer() {
        val handler = Handler()
        val runnable = object: Runnable {
            override fun run() {
                val hour = seconds / 3600
                val minutes = (seconds % 3600) / 60
                val secs = seconds % 60
                findViewById<TextView>(R.id.textView_timer).text = String.format("%02d:%02d:%02d", hour, minutes, secs)
                if (running) {
                    seconds ++
                }
                handler.postDelayed(this, 1000)
            }
        }
        handler.post(runnable)
    }

    override fun onSaveInstanceState(outState: Bundle) {
        super.onSaveInstanceState(outState)
        outState.putInt("seconds", seconds)
        outState.putBoolean("running", running)
        outState.putBoolean("wasRunning", wasRunning)
    }
}